King Arthur, accompanied by his squire, recruits his Knights of the Round Table, including Sir Bedevere the Wise, Sir Lancelot the Brave, Sir Robin the Not-Quite-So-Brave-As-Sir-Lancelot and Sir Galahad the Pure. On the way, Arthur battles the Black Knight who, despite having had all his limbs chopped off, insists he can still fight. They reach Camelot, but Arthur decides not to enter, as "it is a silly place".

去大公司面试成功的Jen（凯瑟琳·帕金森 Katherine Parkinson 饰）以为自己中了头彩，结果却被分配到了地下层的IT部门。部门里只有2个人，Moss（理查德·艾欧阿德 Richard Ayoade 饰）和Roy（克里斯·奥多德 Chris O'Dowd 饰），2个电脑方面的专家，生活常识类的怪人。对电脑一窍不通的Jen强装出一副精通的样子，惹出了不少笑话。
Jen和IT怪人二人组意外的很合拍，总会把一些本来很平常的事情，弄得一发不可收拾，让人哭笑不得。而公司的老板（克里斯多夫·莫利斯 Christopher Morris 饰）也会时不时的出现，和他们一起上演让人捧腹大笑的故事。别具一番风味的英式幽默故事在IT部门上演。